MONGOC_GRIDFS_FILE_WRITEV(3)

📦
version 2.5.6 · 16 versions
, in epel 10

✨ MONGOC_GRIDFS_FILE_WRITEV 💅

okay so bestie, this is a page from the libmongoc manual (section 3, the library-functions one 🎀) and it's all about one lil function that does a gathered write into a GridFS file. yes ma'am, let's get into it 🦋

✨ SYNOPSIS ✨

ssize_t
mongoc_gridfs_file_writev (mongoc_gridfs_file_t *file,
                           const mongoc_iovec_t *iov,
                           size_t iovcnt,
                           uint32_t timeout_msec);

like, that's the whole signature, copied exactly, no cap 💅

🌸 PARAMETERS 🌸

  • file — a mongoc_gridfs_file_t. the actual file you're writing into, the main character of this whole operation 👑
  • iov — an array of mongoc_iovec_t. it's giving "a whole bunch of buffers at once" energy 🧺
  • iovcnt — the number of elements in iov. yes, you have to tell it how many, it's not gonna count for you 🙈
  • timeout_msec — unused. that's it. that's the description. it literally does nothing 😭

💖 DESCRIPTION 💖

so what it does: performs a gathered write to the underlying gridfs file. gathered = it grabs all your iov buffers and writes them together, one call, slay ✨

the timeout_msec parameter is unused. (yes, we're saying it twice, because the manpage says it twice, and honestly it deserves the emphasis 💀)

⚠️ huge warning, bestie, listen up — modifying GridFS files is NOT thread-safe. only one thread or process can access a GridFS file while it is being modified. literally do not share, do not multitask, do not let your goroutine bestie touch it while you're mid-write. periodt. 🔥

🦋 RETURNS 🦋

returns the number of bytes written, or -1 on failure 😭 and if you get that -1, go call mongoc_gridfs_file_error() to retrieve the error details — that's where the actual tea is ☕

🎀 AUTHOR 🎀

MongoDB, Inc — icons, honestly 🫶

2009-present, MongoDB, Inc. — all the legal bits, preserved with love 🌈

and that's the page!! libmongoc version 2.5.6, dated Oct 09, 2026, page MONGOC_GRIDFS_FILE_WRITEV(3) — mwah, thanks for reading, ily, go write some bytes 💜🍓

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